1. Ahmad M, Alam K, Tariq S, Anwar S, Nasir J, Mansha M (2019) Estimating fine particulate concentration using a combined approach of linear regression and artificial neural network. Atmos Environ 219:117050
2. Arhami M, Hosseini V, Shahne MZ, Bigdeli M, Lai A, Schauer JJ (2017) Seasonal trends, chemical speciation and source apportionment of fine PM in Tehran. Atmos Environ 153:70–82
3. Begum W, Rai S, Banerjee S, Bhattacharjee S, Mondal MH, Bhattarai A, Saha B (2022) A comprehensive review of the sources, essentiality, and toxicological profile of nickel. RSC Adv 12:9139–9153
4. CEN, (2005) Ambient air quality - Standard gravimetric measurement method for the determination of the PM2.5 mass fraction of suspended particulate matter. EN 14907:2005. Brussels, Belgium: Comite Europeen de Normalisation (CEN; European Committee for Standardization).
5. Cerón Bretón JG, Cerón Bretón RM, Espinosa Guzman AA, Guarnaccia C, Martínez Morales S, Lara Severino RdC, Rangel Marrón M, Hernández López G, Carranco Lozada SE, Kahl JDW et al (2019) Trace metal content and health risk assessment of PM10 in an urban environment of Leon. Mexico Atmos 10:573